Quran 18:5 — The Cave (Al-Kahf)

They possess no knowledge about this, nor did their parents. What a blasphemy coming out of their mouths! What they utter is a gross lie.

[18:4] And to warn those who said, "GOD has begotten a son!"

[18:6] You may blame yourself on account of their response to this narration, and their disbelieving in it; you may be saddened.